Wash the intestines and stomach
As a Chinese idiom, the Pinyin is x ǐ ch á NGD í w è I, which means that the metaphor is completely removed; the metaphor is completely changed. It's from "Helin Yulu".
The origin of Idioms
Volume 16 of Luo Da Jing's Helin Yulu: "if the traitors go away, it's proper to wash the stomach and intestines. If we take advantage of Wen Taizhen to open a way for the villain, and take advantage of fan Yaofu's words to worry about the future disaster for the gentleman, we will lose it."
Idiom usage
As predicate, object, attribute; used in figurative sentences.
Examples
From then on, I'll wash my stomach to listen to the guide. Shen De Fu's Ye Huo Bian Li Bu Yi Yi Yi Tu Ren in Ming Dynasty
Wash the intestines and stomach
drain the pond to get all the fish - hé zé ér yú